#include <Servo.h>

Servo servo1;

int x_key = A0;
int x_pos;
int servo1_pin = 3;
int initial_position1 = 90;

void setup() {
  // put your setup code here, to run once:
  Serial.begin (9600);
  Serial.println(x_pos);
  servo1.attach(servo1_pin); 
  servo1.write(initial_position1);
  pinMode (x_key, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  x_pos = analogRead (x_key);
  x_pos = map(x_pos, 0, 1023, 0, 180);
  Serial.println(x_pos);
  delay(1000);

  for(x_pos = 0; x_pos >= 89; x_pos += 1)
  {
  Serial.println(x_pos);
  servo1.write(x_pos);
  delay(10);
  }
  
  for(x_pos = 180; x_pos <= 91; x_pos -= 1)
  {
  Serial.println(x_pos);
  servo1.write(x_pos);
  delay(10);
  }
}